void SetPins(AgendaPageModel context)
{
if (context == null || context.CourseItems == null)
{
return;
}
Map.Pins.Clear();
Map.Polylines.Clear();
// Draw Point markers
foreach (var item in context.CourseItems)
{
var pin = new Pin()
{
Address = item.Address,
IsDraggable = false,
Flat = true,
Label = item.ContactName,
IsVisible = true,
Icon = BitmapDescriptorFactory.FromView(new BindingPinView(item.Index, Color.Transparent)),
Position = new Position(item.Latitude, item.Longitude)
};
Map.Pins.Add(pin);
}
// Draw Lines connecting points
for (int i = 0; i < context.CourseItems.Count; i++)
{
if (i + 1 < context.CourseItems.Count)
{
var item = context.CourseItems[i];
var next_item = context.CourseItems[i + 1];
var line = new Polyline()
{
IsClickable = false, StrokeColor = (Color)App.Current.Resources["darkSkyBlue"], StrokeWidth = 2
};
line.Positions.Add(new Position(item.Latitude, item.Longitude));
line.Positions.Add(new Position(next_item.Latitude, next_item.Longitude));
Map.Polylines.Add(line);
}
}
if (!Map.Pins.Contains(MyPin) && !string.IsNullOrEmpty(MyPin.Label))
{
Map.Pins.Add(MyPin);
}
}
// Assign on set pins event whenever list is changed
protected override void OnBindingContextChanged()
{
base.OnBindingContextChanged();
if (BindingContext == null)
{
return;
}
ViewModel = BindingContext as AgendaPageModel;
ViewModel.PropertyChanged += (sender, e) =>
{
if (e.PropertyName == "CourseItems")
{
SetPins(ViewModel);
}
};
SetPins(ViewModel);
}
